I just bought a SP3 from amazon and the touchscreen does not seem to work in a row of pixels. I've tried calibration, resetting calibration, wiping the screen. Nothing seems to work. The only thing I've noticed is when starting up surface I see a thin yellow line where the row of unresponsive touch is.
ex.
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!%%%%%%%%%%%%%%%%
!%%%%%Surface%%%%%%%
!%%%%%%%%%%%%%%%%
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The exclamation marks represent the yellow thin line. The percentage signs mean unresponsive touch. The equals signs mean normal working touchscreen pixels. (This is the boot screen). I do not know if this surface was in contact with water, are there any water damage indicators? I also clean installed Windows 10 and am not sure if the correct drivers are installed - Everything just worked when I installed Windows 10.